THE MECHANISMS OF 2 WAY-SHAPE MEMORY EFFECT IN A CU-ZN-AL ALLOY

This paper deals with the degradation of the two way shape memory effe ct during thermal cycling between different temperatures. The alloy wi th composition Cu-20.4Zn-5.6Al (wt%) shows a comparative degradation b ehavior of the two way shape memory effect obtained by different metho ds. The mechanisms are different for different training routines. The constrained thermal cycling training is related to stabilized martensi te, and the combined stress induced martensite and shape memory effect training mainly results in suitable dislocation arrays. (C) 1997 Else vier Science B.V.